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authorMichał Górny <mgorny@gentoo.org>2015-08-21 17:59:00 +0200
committerMichał Górny <mgorny@gentoo.org>2015-08-21 17:59:00 +0200
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tree1eb543d2acbe00d8501244a7246f4cb84316be74 /2014-10-04-restructuring_of_mips_profiles/2014-10-04-restructuring_of_mips_profiles.en.txt
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Fixes: https://bugs.gentoo.org/show_bug.cgi?id=523828
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+Title: Restructuring of mips profiles
+Author: Anthony G. Basile <blueness@gentoo.org>
+Content-Type: text/plain
+Posted: 2014-10-04
+Revision: 1
+News-Item-Format: 1.0
+Display-If-Keyword: mips
+Display-If-Installed: sys-libs/glibc
+
+To accomodate the new multilib approach in Gentoo, the mips profiles will be
+changing on Oct 11, 2014. The new profile structure will be as follows:
+
+ [1] default/linux/mips/13.0/o32
+ [2] default/linux/mips/13.0/n32
+ [3] default/linux/mips/13.0/n64
+ [4] default/linux/mips/13.0/multilib/o32
+ [5] default/linux/mips/13.0/multilib/n32
+ [6] default/linux/mips/13.0/multilib/n64
+ [7] default/linux/mips/13.0/mipsel/o32
+ [8] default/linux/mips/13.0/mipsel/n32
+ [9] default/linux/mips/13.0/mipsel/n64
+ [10] default/linux/mips/13.0/mipsel/multilib/o32
+ [11] default/linux/mips/13.0/mipsel/multilib/n32
+ [12] default/linux/mips/13.0/mipsel/multilib/n64
+ [13] hardened/linux/musl/mips
+ [14] hardened/linux/musl/mips/mipsel
+ [15] default/linux/uclibc/mips
+ [16] hardened/linux/uclibc/mips
+ [17] default/linux/uclibc/mips/mipsel
+ [18] hardened/linux/uclibc/mips/mipsel
+
+There are a few points to note about the change:
+
+1) Only the glibc profiles (1-12) are affected. The embedded system profiles
+(13-18) will not change.
+
+2) The glibc profiles will now explicitly state the ABIs. In the case of
+non-multilib systems (1-3, 7-9) the stated ABI will be the only ABI available,
+while in the case of multilib systems (4-6, 10-12) the stated ABI will be the
+default ABI, and the others will be available by setting ABI_MIPS in make.conf.
+
+3) Profiles 1 and 7 are strictly 32-bit userland, but can run under either a
+32-bit or 64-bit kernel. They will have CHOST = mips-unknown-linux-gnu and
+mipsel-unknown-linux-gnu, respectively. All the other glibc profiles (2-6, 8-12)
+are 64-bits userland and will have CHOST = mips64-unknown-linux-gnu or
+mips64el-unknown-linux-gnu.
+
+4) Only users of profiles 1 and 7 need to change their profiles sym links using
+`eselect profile`. However, all users should be aware of the CHOST value on
+their system to ensure it remains unchanged after the profile updates.
+